Motorola APX 7000 Detailed Service Manual page 637

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Table of Contents

Asynchronous

Receiver Transmitter

Universal Connector

Universal Serial Bus

vector sum excited

linear predictive

vocoder/controller

voice encoder

voltage-controlled

A microchip with programming that controls a computer's interface to its

attached serial devices.

Interface point for all accessories to the radio.

An external bus standard that supports data transfer rates of 12 Mbps.

See Universal Serial Bus.

See voltage-controlled oscillator.

Voltage-Controlled Oscillator Buffer IC.

A voice-encoding technique used in ASTRO digital voice.

Very-High Frequency.

Vehicle Interface Port.

See vocoder/controller.

An electronic device for synthesizing speech by implementing a

compression algorithm particular to voice. See also voice encoder.

A PC board that contains an ASTRO radio's microcontroller, DSP,

memory, audio and power functions, and interface support circuitry.

The DSP-based system for digitally processing analog signals, and

includes the capabilities of performing voice compression algorithms or

voice encoding. See also vocoder.

An oscillator in which the frequency of oscillation can be varied by

changing a control voltage.

See vector sum excited linear predictive coding.

Troubleshooting